A popular technique used by website operators to observe the keystrokes, mouse movements and scrolling behavior of visitors on Web pages is fraught with risk. The technique offered by a number of service providers uses scripts to capture the activity of a visitor on a Web page, store it on the provider's servers, and play it back on demand for a website's operators. The idea behind the practice is to give operators insights into how users are interacting with their websites and to identify broken and confusing pages.